Tire tread



FIG. 1 is an enlarged partial front elevation view of a tire tread showing our new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a front, right perspective view thereof;

FIG. 4 is a right side elevation view thereof; and,

FIG. 5 is a left side elevation view thereof.

The broken line showing is for the purpose of illustrating portions of the tire tread and forms no part of the claimed design. 

CLAIM The ornamental design for a tire tread, as shown and described. 